Ventilator



Sept. 26, 1950 R. H. GUENTHER VENTILATOR 2 Sheets-Sheet 1 Filed June 25, 1946 INVENTUR.

p 1950 R. H. GUENTHER 2,523,620

VENTILATOR Filed June 25, 1946 I 2 Sheets-Sheet 2 IN VEN TOR.

Ruipf .Gmenfaw BY Patented Sept. 26, 1950 i UNITED sT rEs PATENT err-ice This invention relates to ventilatorsof theretary type such disclo'sedin my prior Patent No.

2,018,020,. dated October 22., 1935, and has for its principal object the provision of an improved mounting for rotatably supporting the hood of' the ventilator over the upper end of the draft pipe or chimney.

Another and more particular object of this invention is to provide such a mounting, which automatically prevents any accumulation of matter which might otherwise clog the rotating parts and prevent the free relative rotation thereof.

A further object is to provide such amounting which offers a minimum of resistance to the free flow of gases through the outlet afforded by the end of said pipe and hood.

Another object of this invention is to provide such a mounting which is more simple of construction and which may be more conveniently and economically manufactured, and to provide a more efiicient method of making the same.

Other and further objects of this invention will become more apparent as the same becomes better understood from an examination of the specification and claims in conjunction with the accompanying drawings wherein:

Fig. 1 is a plan view of a mounting embodying this invention; I

Fig. 2 is a section taken at the line 2-2 of Fig.

Fig. 3 is a section taken at the line 3-3 of Fig. 2.

Referring to the drawings more particularly, reference character i designates a circular base formed of a single strip of band steel with its ends welded together at 2 and provided with openings 3 to receive bolts (not showniby. means of which it is attached to the upper end of a draft pipe or chimney 3 (shown in construction lines in Fig. 2).

A vertical supporting pin or pedestal 5'isconcentrically and coaxially mounted within the circular base i by means of three radial ribs 6 which are welded at their outer ends to inner periphery of said base and at their inner ends to the lower marginal end of said pin.

The upper end of the pin 5 is conical and extends to a point i to provide a frictionless bearing for a carriage generally designated 8. This carriage 8 will now be more particularly described and serves to supportthe hood 9 of the ventilator (shown in construction lines in Fig. 2 and simila to the hood in my aforesaid prior patent).

The carriage 8 comprises a strip it of band steel struck to provide a vertical section II, an integral upper end section It at an oblique angle 2 Claims. (01. 98-68) 2 to said vertical section and an integral lower section l3 at right angles to the lower end of said vertical section. The lower right angle section i3 has an extreme end portion l4 bent downwardly therefrom at an oblique angle and provided with an opening for receiving a bolt (not shown) for attaching the lower central portion of the hood 9 thereto. The upper section I2 of the strip 0 has welded thereto a curved cross piece i5 which is provided with suitable apertures at its extremities to receive bolts (not shown) for attaching the upper central portion of the hood 9 thereto. The carriage 8 also includes a right angular strip [6 of band steel which has a horizontal portion I1 and a vertical shank portion l8 at right angles thereto. The end of the horizontal section i7 opposite the shank is welded to the vertical section H of the strip l0 whereby the underside of the horizontal section ll engagesthe point 1 providing a substantially frictionless suspension bearing and a pair of vertically spaced transverse strips or bars i9 and 20 apertured midway of their ends to receive the pin 5 which is welded between the sections IS and l I, completes the framework for the carriage 8 and act as guide members for maintaining the carriage in coaxial arrangement about the frictionless bearing suspension point i. a

In order to prevent the carriage 8 from being lifted off of the pin 5 by the flow ofv air or gases upwardly through the pipe 4 and out of the hood 9 a'stop 2| is provided integrally on said pin above the member 20 by simply applying a lump of welded metal to said pin at that point,

In order to assure that grit or other extraneous matter will not accumulate within the openings provided in the transverse bars l9 and 29 which form guideways for maintaining the carriage 8 in vertical coaxial alignment with the pin 5, I mount these bars so that they slope transversely preferably approximately 30 degrees from the horizontal whereby the degree of this slope is suf 'ficient to cause the edges of the respective bars at the low point 23 of the openingto be spaced longitudinally of the pin 5 from the edge at the high point 24 of the opening a distance at least approximately equal to the thickness of the bar whereby the edge of the bars at the opening present a cutting edge at a substantialfacute angle to the planes of rotation of said bars around the surface of said pin 5 so that any precipitation of extraneous matter upon the pin 5 within the openings therefor in th bars it and 20 will be cut away during the slightest rotation of the hood and will not accumulate whereby there will be no clogging within said openings and the contact between the bars 19 and 20 and said pin will always be free and permit the free rotation of the hood 9 by the wind blowing upon the vane 22 (shown in construction lines in Fig. 2) thereon.

The advantages of the aforedescribed construction wherein by the use of welded construction a minimum of parts are used providing in turn a minimum of resistance to the free flow of air and gases upwardly through the ventilator and wherein by transversely sloping the guide bars l9 and 20 free turning of the ventilator is always assured, will be apparent without further detail.

I am aware that many changes may be made without departing from the principles of my invention and I therefore do not wish to be limited to the details shown and described.

I claim:

1. The combination with a hood of a ventilator of the rotary type, of a mounting comprising a vertical pin and supporting means therefor for rigidly maintaining said pin in vertical position, a carriage formed of three vertically spaced flat bars extending between a pair of vertical sup porting members, one of which latter is attached to the hood, the upper bar being in anti-friction bearing contact with the upper end of the pin, the

lower bars being apertured midway their ends to form cylindrical bearing surfaces in contact with said pin at vertically spaced points and being tilted at a substantially acute angle from the horizontal whereby precipitation of extraneous matter upon the pin within the openings therefor in said bars will tend to be cut away by the rotation of the hood.

2. The combination expressed in claim 1 with the two lower bars being oppositely tilted from the horizontal.

3. The combination as expressed in claim 1 with the tilt referred to of the two lower bars from the horizontal being approximately thirty degrees.

RUDOLPH H. GUENTHER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 920,621 Neiburger May 4, 1909 1,148,702 Meixell Aug. 3, 1915 2,018,020 Guenther Oct. 22, 1935 

